Types of Rechargeable Hearing Aids

There are two types of rechargeable hearing aid technology in the market today –

  • Lithium-ion rechargeable battery technology
  • Silver-zinc rechargeable battery technology

Phonak and Signia are the two major brands which have harnessed the Lithium-ion technology while Unitron has the Silver-zinc technology in its quiver.

We think there are pros and cons to the devices like everything else. Let us explain these for both the types.

Lithium-Ion Rechargeable Hearing Aids

No more battery change:While the traditional hearing aids come with the hassle of changing batteries, this new technology ensures that you don’t have to do that anymore. ·Safety:Lithium is poisonous, and considering the tiny size of the hearing device, it can be a potential hazard to children and pets when swallowed accidentally.
 24 hours:The technology has reached a certain standard now, where you should be able to use it for 24 hours even with audio streaming. Power Limitations: While Lithium-ion powered devices boasts of a powerful battery life, there exists the possibility of the batteries not lasting for a full 24-hour day when used for listening to audio files for a long duration.
Easy Charging:Simply drop your hearing aids in your charger and in the morning take them out and they’re ready for the day – no hassle.


Sealed Case: If your hearing aid runs out of power while still in use, the hearing aid cannot run on a normal disposable battery. When a lithium-ion battery reaches the end of its life (in 4-5 years), it cannot be replaced by the user – it will need to be swapped out by the manufacturer.

Silver-Zinc Rechargeable Hearing Aids

No more battery changes:The technology promises long battery durability, ensuring that you just have to change the battery once a year. Power Limitations:If you stream a lot of  audio, there’s a possibility batteries may not last the full 24-hour day
24 hours:This technology also ensures you 24 hours use, with up to 5 hours streaming. Once a year replacement: Silver-Zinc batteries need to be replaced once a year. This represents a cost to you; however, they are cheap enough so the cost over four or five years probably balances out with the repair cost of changing a Lithium-Ion power pack.
Safety:The best part of Silver-zinc is that it is non-flammable, non-toxic and recyclable. Risk of Loss:There is a chance of losing or misplacing the small Silver-Zinc battery as the batteries are not sealed in the hearing aid, and need replacement annually, and in cases when they are swapped our for traditional zinc-air batteries.

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